11021222197 has 2 divisors, whose sum is σ = 11021222198. Its totient is φ = 11021222196.

The previous prime is 11021222189. The next prime is 11021222203. The reversal of 11021222197 is 79122212011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10751408721 + 269813476 = 103689^2 + 16426^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021222197 - 2³ = 11021222189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021225197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510611098 + 5510611099.

It is an arithmetic number, because the mean of its divisors is an integer number (5510611099).

Almost surely, 2^11021222197 is an apocalyptic number.

It is an amenable number.

11021222197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021222197 is an equidigital number, since it uses as much as digits as its factorization.

11021222197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 11021222197 in words is "eleven billion, twenty-one million, two hundred twenty-two thousand, one hundred ninety-seven".